samsung syncmaster 713bm monitor problem

Hi ive got a samsung monitor which has developed a fault. After using it for about 30 mins the screen goes black and a small white box moves across screen saying not optimum mode recommended mode 1280x1024 60hz. Computer is working ok its just the monitor. Can this problem be fixed or do i need a new monitor. Any advice would be appreciated.

Can you try the screen with another computer? It may be your graphics card that is failing. The cost of investigation and repair may well be more than a new moniter. It would be worth an email to Samsung support to ask if they know of the cause.